While organizations were busy helping people meet the deadline, last-minute enrollees were met with some problems. But aside from some technical glitches, health care advocates said they felt pretty good about where things stood.

Officials said some people remain skeptical of the system.

"A lot of times, they're very reluctant because they say they feel they are being forced to be here," said Bernandette Cameron of the Foundation for Healthy Communities. "But by the time we go over the information, they are usually very surprised."

With more than 21,000 people signed up in the state, New Hampshire has exceeded the federal benchmark for the deadline.

The late surge on Monday was hit with two glitches on the website -- a four-hour outage during the morning and another hiccup in the afternoon.

"Honestly, I think it's because there was so much interest," said U.S. Rep. Annie Kuster, D-N.H. "Two million people were online this weekend. We're a nation of procrastinators. It's important to get online today and start that process."

"It's like Election Day," said Karen Hicks, director of Covering NH. "If you're at the polls when they close, you'll still be able to cast your ballot. So we feel good about that, and we just encourage everybody to get online at healthcare.gov and sign up."

The White House said it's is hopeful that after the last-minute surge, more than 6.5 million people will have signed up. It remains unclear how many of those were uninsured previously and how many had to find new plans after their old ones were canceled for not meeting the requirements of the ACA.